Loans Receivable and Allowance for Credit Losses - Narrative (Details)	12 Months Ended
	Dec. 31, 2023 USD ($) loan	Dec. 31, 2022 USD ($) loan	Dec. 31, 2021 USD ($) loan
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 4,468,476,000	$ 4,275,178,000
PROVISION FOR CREDIT LOSS EXPENSE	5,993,000	8,589,000	$ 6,003,000
Provision for credit losses on unfunded loan commitments	$ 156,000	603,000	0
Amortized cost in troubled debt restructurings		12,400,000	16,600,000
Financing receivable, troubled debt restructuring, allowance for loans		$ 2,200,000	$ 2,600,000
Minimum period to be considered for loan to have defaulted	90 days
Loans modified as TDRs with a subsequent payment default | loan	0	0	0
Principal balances forgiven in connection with loan restructuring	$ 0	$ 0	$ 0
Syndicated loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	108,710,000	156,649,000
Unfunded Loan Commitment
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing receivable excluding accrued interest modified accumulated	0
Commercial and Industrial
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	726,442,000	791,911,000
Commercial and Industrial | Syndicated loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans receivable	$ 108,700,000	$ 156,600,000